摘要
电流源型整流器(current source rectifier,CSR)具有短路保护和降压能力等特点,可应用在直流微电网、数据中心和电机驱动等领域。电流源型整流器的交流侧采用LC二阶滤波器,传统控制器的设计面临着谐波振荡及参数整定难题。为此,提出一种面向谐波振荡抑制的模型预测控制方法。对影响谐波振荡现象的直流电流与滤波电容电压进行研究,提出预测方法;在此基础上,建立价值函数,并提出相对应的模型预测控制策略(model predictive control,MPC),通过该控制方案,CSR能够得到较好的稳态表现及动态响应,在运行于单位功率因数的同时,可以抑制谐波振荡现象的发生。最后,使用MATLAB搭建仿真模型,对所提控制策略的有效性进行验证。
Current source rectifier(CSR)possess the characteristics of short circuit protection and buck capability,which can be used in some fields such as DC microgrid,data centers and motor drive.Since CSR integrates the LC second-order filter at AC side,the harmonic oscillation and the parameter configuration are difficult problems faced by the design of conventional controller.In view of this problem,this paper proposes a model predictive control strategy of CSR with harmonic oscillation suppression.Firstly,DC current and filter capacitor voltage are studied,which affect harmonic oscillation.On this basis,the value function is constructed and the corresponding model predictive control(MPC)strategy is proposed.Using this control strategy,the current source rectifier can obtain better steady-state performance and dynamic response.It can obtain the power factor correction,and meanwhile suppress the current harmonic oscillation.Finally,a simulation model has been built using MATLAB,and then the effectiveness of the proposed control strategy has been verified.
作者
周超群
刘明峰
李晓悦
于强
刘术波
ZHOU Chaoqun;LIU Mingfeng;LI Xiaoyue;YU Qiang;LIU Shubo(State Grid Qingdao Power Supply Company,Qingdao 266000,China)
出处
《山东电力技术》
2023年第9期50-57,共8页
Shandong Electric Power
基金
国网山东省电力公司科技项目“基于电流源型接口换流器的直流配电网关键技术研究”(520602210002)。
关键词
电流源型整流器
模型预测
电流控制
谐振抑制
current source rectifier
model prediction
current control
resonance damping
